US Gallons to Liters Converter
1 US gallon ≈ 3.78541178 liters
About 17% smaller than the imperial gallon used in the UK.
1 US gallon equals 3.78541 liters
How to convert US gallons to liters
Choose the named US, Imperial or metric unit before converting a recipe or container size. A US liquid gallon is 3.785411784 L; an Imperial gallon is 4.54609 L. Volume alone cannot give ingredient mass without density.
L = gal × 3.785411784One US gallon is 3.785411784 liters, so a single multiplication converts any value.
37.8541 L ≈ 10 × 3.785411784About 17% smaller than the imperial gallon used in the UK.
US gallons to liters conversion table
Common values in US gallons, converted to liters.
| US gallons (gal) | Liters (L) |
|---|---|
| 1 | 3.7854118 |
| 2 | 7.5708236 |
| 3 | 11.356235 |
| 4 | 15.141647 |
| 5 | 18.927059 |
| 10 | 37.854118 |
| 20 | 75.708236 |
| 25 | 94.635295 |
| 50 | 189.27059 |
| 100 | 378.54118 |
| 250 | 946.35295 |
| 500 | 1,892.7059 |
| 1,000 | 3,785.4118 |
About these units
US gallongal
The US liquid gallon: exactly 231 cubic inches, or 3.785411784 litres.
literL
Exactly one cubic decimetre, or 1,000 cm³. The everyday metric volume unit.
Reference: BIPM, non-SI units accepted for use with the SI.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.